HP 34811A BenchLink Software

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User’s GuidePart Number 34811-90001January 1994For Warranty and Regulatory information, see the pages behindthe Index. Copyright Hewlett-Packard Company 1994All Rights Reserved.HP 34811ABenchLink Software

The HP 34811A BenchLink Software (HP BenchLink/Arb) packageprovides a communication link between a personal computer (PC)and the HP 33120A Function/Arbitrary Waveform Generator(function generator). HP BenchLink/Arb allows you to create and editwaveforms in a Windows environment before transferring them to thefunction generator. HP BenchLink/Arb’s key functions are: Create and edit arbitrary waveforms up to 16,000 points in length. Combine waveforms using mathematical operators including add,subtract, and multiply. Perform other mathematical operations such as clip, absolute, invert,mirror, smooth, and resize. Import X/Y (time/voltage pair) waveforms from Mathcad and otherBenchLink applications such as HP 34810A BenchLink/Scope. Copy waveforms as a bitmap to paste into other applications. Transfer waveforms to the HP 33120A function generator. Save waveforms to a file for later use.HP 34811ABenchLink Software

Conventions Used in this GuideThroughout this guide the following typeface and icon conventions aremaintained to improve readability and enable you to quickly find theinformation you need.Ctrl CItalics are used to indicate a hot key (shortcut) to perform a task or togive some useful information.The Toolbar, Palette Bar, and some paragraphs in this guide containicons to represent an action.CANCELThis typeface is used to indicate the label on a button or other control.b:\setupThis typeface indicates that input from the keyboard can be typedliterally or indicates a menu command to be selected. For example:"Type b:\setup" or "Select File Open. from the Menu Bar".File Open. is separated by a bar because you must first select theFile menu, then select Open.Recommended ReadingThis guide assumes that you have some experience using MicrosoftWindows. If you don’t know how to use the basic features of Windows orare unfamiliar with terms such as click, double-click, resizing, anddragging, you may want to consult your Microsoft Windows User’s Guide.If you are new to the HP 33120A Function/Arbitrary WaveformGenerator, please read your user’s guide before using HP BenchLink/Arb.The READBLA.WRI fileThis file contains up-to-date information about the HP BenchLink/Arbapplication. It is installed as an icon in the BenchLink program groupduring installation. Double-click the icon to view the contents of the file.2

In This BookChapter 1 - Installation describes how to install HP BenchLink/Arband configure your instrument for operation.Chapter 2 - Quick Start describes how to start the software andprovides a brief exercise to help you get started using HP BenchLink/Arb.Chapter 3 - Using HP BenchLink/Arb describes how to useHP BenchLink/Arb for creating, editing, printing, and saving arbitrarywaveforms as well as transferring waveforms to the HP 33120AFunction/Arbitrary Waveform Generator.Chapter 4 - Feature and Function Reference describes the featuresand functions available for editing and creating waveshapes.Chapter 5 - Using with Other Applications describes how to useHP BenchLink/Arb with other Windows applications. Special file formatsare described.Chapter 6 - Error and Information Messages lists possibleHP BenchLink/Arb error and information messages with explanationsand suggested solutions.3

Table of ContentsConventions Used in this GuideRecommended Reading . . . . .The READBLA.WRI file . . . .In This Book . . . . . . . . . . .4. 2. 2. 2. 3Chapter 1 – InstallationEquipment Required . . . . . . . . . . . .Personal Computer Requirements . . .Computer Interface Requirements . . .Installing the HP BenchLink/Arb SoftwareIf you encounter problems . . . . . . . .To Change the HP BenchLink/Arb Icon . .Freeing Disk Space . . . . . . . . . . . . .To Remove HP BenchLink/Arb . . . . . . .Chapter 2 – Quick StartHP BenchLink/Arb Components . . . . . . . . . . .Title Bar . . . . . . . . . . . . . . . . . . . . . .Menu Bar . . . . . . . . . . . . . . . . . . . . . .Toolbar . . . . . . . . . . . . . . . . . . . . . . .Palette Bar . . . . . . . . . . . . . . . . . . . . .Waveform Edit Windows . . . . . . . . . . . . . .Wave View Window . . . . . . . . . . . . . . . .Status Bar . . . . . . . . . . . . . . . . . . . . .Starting and Closing HP BenchLink/Arb . . . . . .To Create, Save, and Output an Arbitrary Waveform. 14. 14. 15. 15. 15. 15. 15. 15. 16. 17Chapter 3 – Using HP BenchLink/ArbAbout Arbitrary Waveforms . . . . . . . . . . . . . . . . .Creating Waveforms . . . . . . . . . . . . . . . . . . . . .Standard Waveshapes . . . . . . . . . . . . . . . . . . .Freehand Drawing . . . . . . . . . . . . . . . . . . . . .Line Drawing . . . . . . . . . . . . . . . . . . . . . . . .Editing a Waveform . . . . . . . . . . . . . . . . . . . . . .Selecting Parts of a Waveform . . . . . . . . . . . . . . .Modifying Standard Waveshape Segments . . . . . . . .Using the Clipboard . . . . . . . . . . . . . . . . . . . .Copying the Active Waveform Edit Window as a BitmapInserting Data Into an Existing Waveform . . . . . . . .Clearing Waveforms . . . . . . . . . . . . . . . . . . . .Undo . . . . . . . . . . . . . . . . . . . . . . . . . . . .88891010111224262627282828293030303030

Chapter 3 – Using HP BenchLink/Arb (continued)Performing Waveform Math . . . . . . . . . . . . . . .Add . . . . . . . . . . . . . . . . . . . . . . . . . . .Subtract . . . . . . . . . . . . . . . . . . . . . . . .Multiply . . . . . . . . . . . . . . . . . . . . . . . .Performing Math Operations Using the Clipboard .Using Standard Waveshapes in Math Operations .Clipping a Waveform . . . . . . . . . . . . . . . . .Using Absolute . . . . . . . . . . . . . . . . . . . . .Inverting a Waveform . . . . . . . . . . . . . . . . .Mirroring a Waveform . . . . . . . . . . . . . . . . .Smoothing a Waveform . . . . . . . . . . . . . . . .Resizing a Waveform . . . . . . . . . . . . . . . . .Expand To Fit . . . . . . . . . . . . . . . . . . . . .Importing Data Saved From HP BenchLink/Scope . . .Configuring the Interface . . . . . . . . . . . . . . . .Transferring Waveforms to the Function Generator . .Printing Waveforms . . . . . . . . . . . . . . . . . . .Saving Waveforms . . . . . . . . . . . . . . . . . . . .Using HP BenchLink/Arb Help . . . . . . . . . . . . .Configuring the HP 33120A . . . . . . . . . . . . . . .3131313132333434343435353636373940414243Chapter 4 – Feature and Function ReferenceHP BenchLink/Arb Screen Components . . . . . .Title Bar . . . . . . . . . . . . . . . . . . . . .Menu Bar . . . . . . . . . . . . . . . . . . . .Toolbar . . . . . . . . . . . . . . . . . . . . . .Palette Bar . . . . . . . . . . . . . . . . . . . .Status Bar . . . . . . . . . . . . . . . . . . . .Standard Waveshapes . . . . . . . . . . . . . . .Waveform Edit Windows . . . . . . . . . . . . . .Wave View Window . . . . . . . . . . . . . . . .Selection modes . . . . . . . . . . . . . . . . . . .Zoom . . . . . . . . . . . . . . . . . . . . . . . .X and Y Markers . . . . . . . . . . . . . . . . . .Grid . . . . . . . . . . . . . . . . . . . . . . . . .Scrolling . . . . . . . . . . . . . . . . . . . . . . .Tick Marks (Segment Identification Markers) . .File Descriptions . . . . . . . . . . . . . . . . . .ARB . . . . . . . . . . . . . . . . . . . . . . .BIN . . . . . . . . . . . . . . . . . . . . . . .CSV . . . . . . . . . . . . . . . . . . . . . . .PRN . . . . . . . . . . . . . . . . . . . . . . .Sample Files . . . . . . . . . . . . . . . . . . . .464646474849505254555657575858585858585859.5

Chapter 5 – Using With Other ApplicationsImporting Arbitrary Waveforms From Files . . . . . .To import a .CSV or .PRN file . . . . . . . . . . . .To import a file from Mathcad . . . . . . . . . . . .Exporting Arbitrary Waveforms to Other ApplicationsTo Export a Waveform Using the Clipboard . . . . .To Export Waveform Data . . . . . . . . . . . . . .Starting Other BenchLink Applications . . . . . . . .Chapter 6 - Error and Information Messages.62626263636364. . . . . . . 65Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 676

1Installation1

1Chapter 1 InstallationEquipment RequiredThis chapter describes how to install and configure HP BenchLink/Arb torun on your computer.Before beginning the installation process, verify that your system meetsthe following minimum requirements.Equipment RequiredPersonal Computer Requirements IBM (or compatible) 386 or 486 PC. 3.5" 1.44 Mb floppy disk drive (high density). Microsoft compatible mouse (bus or serial). Color VGA or SVGA display. 4 MB memory. 1.4 MB free disk space (additional space is required forstorage of waveforms). Microsoft Windows version 3.1 or higher. Microsoft MS-DOS version 5.0 or higher. Either RS-232 or IEEE-488 (HP-IB/GPIB) interface(as described below).Computer Interface RequirementsIEEE-488 Interface Requirements. To use an IEEE-488 interface withHP BenchLink/Arb you must have an HP-IB1 cable (HP 10833X) and oneof the following IEEE-488 interface cards already installed in yourcomputer: HP 27209A HP-IB HP 82335A/B HP-IB National Instruments AT-GPIB National Instruments GPIB-PCII/IIARS-232 Requirements. To use RS-232 with HP BenchLink/Arb youmust have an RS-232 cable and an available Asynchronous Serial (COM)port on your PC.RS-232 cables and adapters are described in the HP 33120A User’sGuide1HP-IB is Hewlett-Packard’s implementation of IEEE-488.2.8

Chapter 1 InstallationInstalling the HP BenchLink/Arb Software1Installing the HP BenchLink/Arb Software1Insert the HP BenchLink/Arb floppy disk in your computer disk drive.2Save any work in progress. Close unneeded applications.Select File Run at the Program Manager. Type A:\setup in theCOMMAND LINE text box and press ENTER or click OK. Change the driveletter if needed (i.e., B:\setup).3During the installation process, the setup program will prompt you forthe directory to receive the files. Press ENTER to accept the defaultinstallation directory. Type a new drive and directory in the INSTALL TO:text box if needed.4The installation program will create a new program group in theProgram Manager and add the HP BenchLink/Arb and Arb Readme iconsto the group.9

Chapter 1 InstallationTo Change the HP BenchLink/Arb Icon1If you encounter problems Check the system and interface requirements listed on page 8. If you are using RS-232, be sure you are using the correct cable.Interface cables are described in detail in the HP 33120AUser’s Guide. Check the error messages contained in Chapter 6. If your PC is configured to use extended memory management (suchas EMM386.EXE) and you are using a Hewlett-Packard HP-IBInterface card, you must ensure that the memory management doesnot conflict with the interface card. The installation section of yourHP-IB interface card user’s manual describes configurations to avoidthis problem. If you are using an IEEE-488 Interface card, ensure you havecorrectly installed the interface software before runningHP BenchLink/Arb. Either an HPIB.DLL or GPIB.DLL file must belocated in your HP BenchLink/Arb directory, the Windows directory,or a directory included in the PATH command in yourAUTOEXEC.BAT file. For specific details, refer to your IEEE-488Interface card installation guide.To Change the HP BenchLink/Arb IconYou can change the HP BenchLink/Arb icon appearance in theBenchLink program group.1Click the HP BenchLink/Arb icon in the BenchLink program group toselect it (do not start the application).2Select FILE PROPERTIES. in the Windows program manager menubar. The Program Item Properties dialog box is displayed.10

Chapter 1 InstallationFreeing Disk Space13Click the CHANGE ICON. button. The Change Icon dialog box is displayed.4Scroll through the available icons and double click on the icon you wantor highlight the icon and click OK. You will be returned to the ProgramItems Properties dialog box which will now show the new icon. Click OK.You can also select other icons from other program files. Referto your Windows documentation for complete details aboutchanging icons.Freeing Disk SpaceAfter installation you may wish to remove unnecessary files to free harddisk space on your computer. The following table describes files installedby HP BenchLink/Arb that may be safely removed to recover disk space.FileDirectory1*.ARB\BENCH\SAMPLES\ Waveform filesUseWhen to removeIf you no longer need samplewaveform files.ARBINST.EXE \WINDOWS\Installation programAfter HP BenchLink/Arb has beensuccessfully installed.READBLA.WRI \BENCH\Configurationinformation aboutHP BenchLink/Arb andproduct informationadded or changed sincethis manual was printedAfter HP BenchLink/Arb has beensuccessfully installed and you donot plan to change your computerconfiguration(removal not recommended).BL ARB.HLPHelp FileIf you do not wish to use on-linehelp (removal not recommended).\BENCH\1These listed directories assume the default directories were used for installation ofWindows and HP BenchLink/Arb.11

Chapter 1 InstallationTo Remove HP BenchLink/Arb1To Remove HP BenchLink/ArbTo remove the HP BenchLink/Arb program from your computer hard disk:1Delete all the files in the directory containing HP BenchLink/Arb(the default directory is \BENCH).CAUTION If you have other HP BenchLink applications (i.e.,HP BenchLink/ Scope) and delete all the files in the \BENCHdirectory, you will also delete the other applications. Check theREADBLA.WRI file for a list of files installed by HPBenchLink/ Arb.2Delete the \BENCH directory.3Delete all files with the .ARB extension. Use Windows File Manager tosearch your hard disk for these files.4Delete the BENCHLNK.INI file from the Windows directory.CAUTION Do not delete this file if you have other BenchLinkapplications.5Delete the BenchLink program group and all icons from the WindowsProgram Manager.CAUTION You may also delete all files with the .PRN or .CSVextension if you are sure these files are not used by anotherapplication. Use the Windows File Manager to search for thesefiles.12

22Quick Start

Chapter 2 Quick StartHP BenchLink/Arb ComponentsThis chapter provides an overview of HP BenchLink/Arb and gives a fewexercises to help you get started using the software. This chapter doesnot describe all the features and functions of HP BenchLink/Arb.Chapter 4 describes the features and functions.2HP BenchLink/Arb ComponentsTitle BarMenu BarToolbarPalette BarTick Marks ( )waveform editwindowWave View Window(with zoom locator box)Status BarTitle BarThe Title Bar provides the standard Windows Control-menu box andsizing buttons. In the Title Bar, HP BenchLink/Arb displays the name ofany active waveform edit window.14

Chapter 2 Quick StartHP BenchLink/Arb ComponentsMenu BarThe Menu Bar contains pull-down menus. Position your cursor over amenu item and click the mouse button to view the menu choices. You canalso use the menus by holding the Alt key and typing the underlinedletter of the menu choice (for example, Alt F will display the File menu).ToolbarThe Toolbar contains icons for quick display of dialog boxes and rapidexecution of HP BenchLink/Arb commands. The icons on the Toolbarperform the same tasks as the pull-down menus in the Menu Bar, but doso with a single click.Palette BarThe Palette Bar provides quick access to tools used in creating andediting waveforms. Icons allow you to insert new waveform segments intothe active waveform window, edit segments already in the waveformwindow, and to change the view of the waveform by zooming in or out.Waveform Edit WindowsWaveforms created in HP BenchLink/Arb are displayed in waveform editwindows. Waveforms consist of one or more segments which can becreated by inserting standard waveshapes, freehand drawing, linedrawing, and performing mathematical operations. Segments can becombined to create virtually any arbitrary waveform you may need.Wave View WindowThe Wave View window allows you to view the entire waveform whileyou are creating and editing individual segments in the active waveformedit window. Any changes made to the waveform will be reflected in theWave View window. For convenience, the Wave View window can beplaced anywhere on your computer screen.The Wave View window contains a sampled representation of thewaveform, and as such, cannot display every waveform detail. Ratherthan a precise rendering of the waveform, the Wave View window gives ageneral ‘overview’ of the waveform.Status BarThe Status Bar provides brief descriptions of the Menu Bar and Toolbaritems currently selected and provides specific waveform informationdepending upon the application mode. It appears at the very bottom ofthe HP BenchLink/Arb screen and dynamically changes as the variousmenu commands or modes are selected.152

Chapter 2 Quick StartStarting and Closing HP BenchLink/ArbStarting and Closing HP BenchLink/Arb2Starting. HP BenchLink/Arb can be started in one of three ways: From the BenchLink program group, double-click theBenchLink/Arb icon. From the Windows File menu, choose Run. and, assumingHP BenchLink/Arb was loaded in a directory named ’bench’, enter:\bench\bl arb.exe. From the DOS prompt, assuming HP BenchLink/Arb was loaded in adirectory named ‘bench’, type: win \bench\bl arb.exe.Once started, the HP BenchLink/Arb screen can be positioned, sized,maximized, or reduced to an icon using the standard Windows controls inthe Title Bar.The first time you start HP BenchLink/ Arb, the program willprompt you to enter your name and your company name. Thisinformation will appear in the banner screen each time youstart HP BenchLink/ Arb.Closing. You can exit from HP BenchLink/Arb in one of two ways: From the HP BenchLink/Arb Menu Bar, choose File Exit. Double-click the Windows Control-menu box.HP BenchLink/Arb will prompt you to save any unsaved waveformwindows.16

Chapter 2 Quick StartTo Create, Save, and Output an Arbitrary WaveformTo Create, Save, and Output an ArbitraryWaveform2This exercise demonstrates how to use HP BenchLink/Arb. An arbitrarywaveform is created, edited, saved, and output to the function generator.1Start HP BenchLink/Arb as described on the previous page. You shouldhave an empty waveform edit window displayed.2Put a sine wave segment in the waveform edit window by clicking theSine Wave icon.17

Chapter 2 Quick StartTo Create, Save, and Output an Arbitrary Waveform3Add a triangle wave segment to the sine wave by clicking the TriangleWave icon. The triangle wave segment is added to the sine wavesegment. Notice the tick mark (just above the waveform grids) that showswhere the segment begins and ends.4Change the triangle wave segment amplitude. Place the cursor anywhereon the triangle wave segment in the waveform edit window anddouble-click. The Edit Segment dialog box appears.2Set the amplitude to 0.5. Place the cursor in the AMPLITUDE text box andtype 0.5 or click the up and down arrows next to the Amplitude text box.Click OK.18

Chapter 2 Quick StartTo Create, Save, and Output an Arbitrary Waveform2The triangle wave segment amplitude is reduced to 0.5 and the segmentis highlighted.5Expand the arbitrary waveform to fill the waveform edit window. Clickon the Math menu choice and then Expand to Fit in the drop-downmenu.The waveform is expanded to fill all 16,000 data points. The waveformfills the entire window and is now considered arbitrary (you cannot editthe sine wave or triangle wave segments independently).19

Chapter 2 Quick StartTo Create, Save, and Output an Arbitrary Waveform6Save the new waveform by clicking the Save icon. The Save As dialog boxappears.2Type the name wave1.arb in the FILE NAME text box and click OK. Thewaveform edit window name changes to reflect the file name.20

Chapter 2 Quick StartTo Create, Save, and Output an Arbitrary Waveform7Send the new waveform to the function generator. Click the I/O menuoption and then Send Waveform. from the drop-down menu or clickthe Send Waveform icon. The Send Waveform dialog box appears.2Change the AMPLITUDE value to 1.0 and click OK. The waveform is sentto the function generator. The function generator will output the newwaveform once all the data points have been received.If the I/O Send Waveform . menu is not active (gray),HP BenchLink/Arb did not find a function generator on the specifiedinterface. Check that the function generator is properly connected to thecomputer and turned on. Refer to the section "Configuring the Interface"in Chapter 3 for more information.21

33Using HP BenchLink/Arb

Chapter 3 Using HP BenchLink/ArbAbout Arbitrary WaveformsThis chapter describes procedures, components, and features you will usein HP BenchLink/Arb.About Arbitrary Waveforms3The waveforms you create in HP BenchLink/Arb are a series of datapoints. The first point, 0, is given a Y value between -1 and 1. The nextpoint has another Y value, and so on, to the maximum number of datapoints in your waveform. Taken together, these points make up awaveshape.All the data points in the waveform edit window make up one functiongenerator output cycle. When you send the waveform to the functiongenerator, it will attempt to output all the points at the frequency youspecify. For example, if you create a waveform with 10 sine wavesegments and set a 1 kHz output frequency when you send the waveformto the function generator, the output will appear to be a 10 kHz sine wave.The function generator samples the data points at 40 Msamples/second.The maximum output is determined by the sample rate divided by thenumber of points. A full waveform edit window (16,000 data points)appears to have an upper frequency limit of 2.5 kHz , since40 Msamples/16,000 2500. When higher frequencies are reached, thefunction generator automatically samples the points so the full wave isoutput. The function generator will sample no fewer than 8 points perwaveshape. Refer to chapter 7 in the HP 33120 User’s Guide foradditional information about sampling.When possible, you should always send the maximum number of datapoints. The more data points you send, the greater the fidelity of thefunction generator output. HP BenchLink/Arb contains a specialfunction to allow you to expand any waveform to the maximum numberof data points.The relative amplitude (Y values) of your waveform can range from -1 to 1. This is a ‘relative’ amplitude because the function generator outputvoltage will be scaled to these values. You set the desired outputpeak-to-peak voltage when you send the waveform to the functiongenerator. For example, a square wave in the waveform edit windowthat ranges from -1 to 1 can be output as a 1 volt peak-to-peakwaveform. The 1 relative amplitude is scaled to 0.5 volts and the -1relative amplitude is scaled to -0.5. The square wave will be centeredaround 0 volts.24

Chapter 3 Using HP BenchLink/ArbAbout Arbitrary WaveformsBecause of this relative amplitude scaling, it is possible to createwaveforms that contain unintentional dc offsets. Consider a square wavethat ranges from 1 to -0.5. If this waveform is sent to the functiongenerator with a specified output voltage of 1 V peak-to-peak, the squarewave will not be centered around 0 V but will have an apparent 0.5 Voltdc offset. The 1 relative amplitude will be scaled to 0.75 V and the -0.5relative amplitude will be scaled to -0.25 V.Where possible, your waveforms should range from 1 to -1 in thewaveform edit window. HP BenchLink/Arb contains a special function toallow you expand the Y values to the maximum.The Y values of the starting and ending points in your waveform can alsocause unexpected discontinuities if they are not the same value. Thefunction generator output will ‘jump’ from the ending value to thestarting value each cycle. For a smooth waveform output, be sure thestarting and ending values are the same.Small discontinuities within the waveform can be removed by smoothingthe waveform. These discontinuities are common with waveforms createdby freehand or line drawing modes. HP BenchLink/Arb provides a specialsmoothing function for this purpose.253

Chapter 3 Using HP BenchLink/ArbCreating WaveformsCreating Waveforms3Waveforms consist of one or more segments of X and Y points which canbe created in HP BenchLink/Arb in a number of ways, including drawingthe waveform in freehand mode, combining standard waveshapes,applying mathematical operations, and importing X, Y data from otherapplications. Any of these methods can be combined to create morecomplex waveforms. Segments can be of many different sizes with thetotal not exceeding 16,000 points per waveform.To open a new waveform edit window select File New from the MenuBar or click the new waveform edit window icon. An untitled waveformedit window is displayed.Standard WaveshapesStandard waveshapes can be inserted in the waveform edit window byselecting commands from the Waveforms Menu or by clicking an icon onthe Palette Bar.If the selection is made from the Waveforms Menu, the New Segmentdialog box will appear, allowing you to specify and preview thewaveshape characteristics.26

Chapter 3 Using HP BenchLink/ArbCreating Waveforms3If the selection is made by clicking an icon in the Palette Bar, onesegment of the corresponding waveform will be added to the window withdefault values. If the new waveshape segment causes the total points toexceed 16,000, a warning dialog will appear, informing you that thesegment will not be added. Click OK and try a smaller number of pointsor remove part of the existing waveform.Standard waveshapes and their default parameters are described inChapter 4.Freehand DrawingSelect the Freehand drawing mode by clicking the Freehand icon or byselecting Waveforms Freehand from the Menu Bar. The standardcursor changes to a pencil cursor when inside the waveform edit window.Draw the desired waveform shape by pressing and holding the left mousebutton. Release the mouse button to complete the freehand waveformsegment. Freehand waveform segments are automatically connected toany pre-existing segments. You will remain in the Freehand drawingmode until another mode is selected.You are not allowed to draw over a standard waveshape unless youthumbtack markers over one (see page 29). Drawing over anotherfreehand segment will modify the existing points.27

Chapter 3 Using HP BenchLink/ArbEditing a WaveformLine Drawing3Select Line drawing mode by clicking the Line icon or by selectingWaveforms Line from the Menu Bar. Click once in the waveformwindow to start the line and then move the cursor and click again.Numerous connected lines can be drawn by moving the cursor andclicking again. Double-click at the end of the line in the window, pressESCAPE, or press ENTER to terminate the line. You will remain in theLine drawing mode until another mode is selected.You are not allowed to draw over a standard waveshape unless youthumbtack markers over one. Drawing over another line segment willmodify the existing points.Editing a WaveformWaveforms can be edited in multiple ways. Individual segments may beselected and edited, or parts of the waveform may be cut, copied, pastedor cleared from the screen.Selecting Parts of a WaveformTo select a part or segment of a waveform, click the Edit Select icon. Usethe cursor to highlight the area for editing or math operations.When a portion of a waveform is selected and highlighted, the Status Barreflects the start and end points of the highlighted area and the totalnumber of points selected. The highlighted area can be adjusted using thearrow keys: Right arrow - selects the right side of the highlighted area Left arrow - selects the left side of the highlighted area Up arrow - increases the highlighted area Down arrow - decreases the highlighted areaIn normal viewing mode, the up and down arrow keys may not seem toincrease or decrease the highlighted area in the waveform edit window.However, the Status Bar will indicate the change and zooming willshow the effect more efficiently.To invalidate a highlighted selection, click past the end of the waveformor click the Edit Select icon.28

Chapter 3 Using HP BenchLink/ArbEditing a WaveformTo highlight an individual segment, hold the SHIFT key and click on thesegment. Select multiple segments by holding the SHIFT key whileclicking on each segment.To select the entire waveform (multiple segments) chooseEdit Select All from the Menu Bar or hold the SHIFT key anddouble click in the waveform edit window.You can also use markers to confine the editing area or to alter standardwaveshape segments when using freehand or line drawing mode. Enablethe X and/or Y markers by clicking the appropriate icon or select themfrom the Edit menu. Use the Edit Set Thumbtacks command or clickthe Set Thumbtacks icon to hold the markers in specific locations.Modifying Standard Waveshape SegmentsTo modify existing standard waveshape segments, double-click on thedesired segment. This will display the Edit Segment dialog box, allowingyou to change any characteristics of the selected segment. Changes aredisplayed immediately in the waveform edit window. Click OK when youhave finished making changes.When standard waveshape segments have been modified by applyingmath operations or cutting and pasting parts of them, they become‘arbitrary’ segments and will display the Res

and the HP 33120A Function/Arbitrary Waveform Generator (function generator). HP BenchLink/Arb allows you to create and edit waveforms in a Windows environment before transferring them to the function generator. HP BenchLink/Arb’s key functions are: Create an